My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SA7.0CA-E3/73
- Part No.:
- SA7.0CA-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA7.0CA-E3/73.pdf
- Description:
- TVS DIODE 7VWM 12VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,715
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA7.0CA-E3/73 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on signal or power lines. It features 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 500 W peak pulse power (10/1000 μs), 41.7 A peak pulse current (IPPM), and clamps to ≤12.0 V at rated current. Used in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the SA7.0CA-E3/73 datasheet, SA7.0CA-E3/73 pinout, SA7.0CA-E3/73 application, or SA7.0CA-E3/73 equivalent, key selection criteria include bidirectional clamping capability, DO-15 mechanical compatibility, AEC-Q101 qualification, low clamping voltage (VC ≤ 12.0 V), and 175 °C maximum junction temperature - all critical for robust ESD and surge protection in harsh environments.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche breakdown in both polarities, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable VBR and low leakage (<5 μA at VWM), while the DO-15 package supports manual or wave soldering per J-STD-002 and JESD 22-B102.
The SA7.0CA-E3/73 delivers 500 W peak pulse power under 10/1000 μs waveform with 0.01% duty cycle, and exhibits low incremental surge resistance for fast response (<1 ns typical). It is AEC-Q101 qualified and rated for -55 °C to +175 °C operating junction temperature, making it suitable for under-hood automotive and industrial control applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse working voltage before clamping begins |
| VBR min/max | 7.78 V / 8.60 V at 10 mA - Ensures reliable, repeatable avalanche initiation across production lot |
| VC @ IPPM | ≤12.0 V at 41.7 A - Limits downstream IC stress during 10/1000 μs surge events |
| PPPM | 500 W - Sustains high-energy transients common in automotive load-dump or inductive switching |
| ID @ VWM | ≤5 μA - Minimizes standby power loss and avoids false triggering in low-current sensor circuits |
| TJ max | +175 °C - Enables placement near heat sources (e.g., engine control units, motor drivers) |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronic components |
Pinout & Package
Package: DO-15 (DO-204AC), axial-leaded, epoxy-molded case with matte tin-plated leads. No polarity marking - bidirectional operation confirmed by CA suffix and symmetric electrical characteristics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Transient conduction path | Leads are interchangeable; conducts equally in both directions above VBR |
| Lead 1 / Lead 2 | Connection interface | Designed for through-hole mounting; lead length ≥1.0 inch (25.4 mm) required for thermal derating per Fig. 5 |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5%) and long-term reliability under thermal cycling |
| 500 W peak pulse power (10/1000 μs) | Handles high-energy surges from relay coil collapse or lightning-induced coupling |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD testing |
| UL 94 V-0 molding compound | Prevents flame propagation in safety-critical enclosures and battery management systems |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Clamps transients to ≤12.0 V while maintaining <5 μA leakage at 7.0 V, preserving signal integrity and ADC accuracy in 12 V vehicle systems. | Use Scenario: Safeguarding digital input modules against field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary front-end TVS on 24 V DC input channels, coordinated with series impedance for IEC 61000-4-5 Level 3 compliance. Use Value: Withstands repetitive 500 W surges and operates up to +175 °C, enabling direct PCB mounting near DIN-rail power supplies without thermal derating. |
| Consumer Appliance Motor Control | Telecom Line Interface Protection |
Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp flyback voltage spikes during PWM commutation. Use Value: Fast response (<1 ns) and low clamping voltage prevent MOSFET drain-source breakdown, extending inverter lifespan in cost-sensitive white goods. | Use Scenario: Protecting RS-485 transceivers and Ethernet PHYs from lightning-induced surges on building entry lines. IC Role / Device Role / Timing Role: First-stage protector on unshielded twisted-pair interfaces, preceding GDT or polymer PTC secondary protection. Use Value: Symmetric bidirectional clamping eliminates need for polarity-aware layout, simplifying board design for multi-drop communication networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-E3/5A | Unidirectional; same VWM/VBR/VC specs but requires correct polarity orientation | Not suitable where AC-coupled or bipolar signals require polarity-agnostic protection | Select only when circuit topology guarantees consistent voltage polarity and space constraints favor SMA package |
| P6SMB7.0CA | Same DO-214AA (SMB) package; identical bidirectional specs but higher thermal resistance (RθJA = 110 °C/W vs. DO-15's ~100 °C/W) | Less effective in high-ambient-temperature environments without heatsinking | Prefer for automated SMT assembly; verify thermal margin in enclosed enclosures above 85 °C ambient |
Compared with SMAJ7.0A-E3/5A and P6SMB7.0CA, the SA7.0CA-E3/73 offers AEC-Q101 qualification, DO-15 axial form factor for through-hole reliability, and lower thermal resistance - making it optimal for automotive and industrial designs requiring proven ruggedness and manual reworkability.
Availability
SA7.0CA-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer appliance motor control circuits requiring stable component supply and long-term lifecycle support.
Supply support for SA7.0CA-E3/73 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global supplier of discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability and automotive-grade qualification.
The SAxxCA series targets board-level transient suppression in harsh environments, with design focus on bidirectional clamping, AEC-Q101 compliance, and DO-15 mechanical robustness for high-vibration applications.
FAQ
What is the clamping voltage of the SA7.0CA-E3/73 under a 10/1000 μs surge?
The SA7.0CA-E3/73 has a maximum clamping voltage (VC) of 12.0 V at its rated peak pulse current (IPPM) of 41.7 A under a 10/1000 μs waveform. This value is measured per Figure 9 in the Vishay datasheet 88378 and reflects worst-case performance across temperature and process variation. The SA7.0CA-E3/73 maintains this clamping level consistently due to its glass-passivated junction and tight VBR tolerance.
Is the SA7.0CA-E3/73 suitable for automotive applications?
Yes, the SA7.0CA-E3/73 is AEC-Q101 qualified and rated for operation from -55 °C to +175 °C, making it suitable for under-hood and body-control module applications. Its bidirectional clamping, low leakage (<5 μA), and DO-15 mechanical robustness align with automotive EMC and reliability requirements. The SA7.0CA-E3/73 appears in Vishay's automotive-grade product list and meets ISO 7637-2 pulse test conditions when properly mounted.
Does the SA7.0CA-E3/73 have polarity markings?
No, the SA7.0CA-E3/73 has no polarity marking because it is a bidirectional TVS diode - both leads are functionally identical and interchangeable. The "CA" suffix explicitly denotes bidirectional construction, and electrical characteristics (VBR, VC, ID) are symmetric in both directions. This eliminates orientation errors during manual assembly and simplifies layout for AC-coupled or differential signal lines.
What is the maximum steady-state power dissipation for the SA7.0CA-E3/73?
The SA7.0CA-E3/73 has a maximum steady-state power dissipation (PD) of 3.0 W when mounted on an infinite heatsink at lead temperature (TL) of 75 °C, per Figure 5 in datasheet 88378. At higher ambient temperatures or with limited copper area, derating is required - e.g., PD drops to ~1.5 W at TL = 125 °C. This rating applies only to continuous DC or low-frequency reverse bias, not transient suppression duty cycles.
How does the SA7.0CA-E3/73 compare to unidirectional TVS diodes like SA7.0A-E3/73?
The SA7.0CA-E3/73 provides symmetrical clamping for both positive and negative transients, whereas SA7.0A-E3/73 is unidirectional and requires correct cathode orientation. The SA7.0CA-E3/73 has identical VWM (7.0 V), VBR (7.78–8.60 V), and VC (≤12.0 V) specs but adds polarity insensitivity - critical for protecting AC signals, differential buses, or circuits with undefined ground reference. Both share DO-15 packaging and AEC-Q101 qualification.
SA7.0CA-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 41.7A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA7.0CA-E3/73 FAQ
1.How can I place an order for SA7.0CA-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA7.0CA-E3/73 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SA7.0CA-E3/73 reliable?
The price and inventory of SA7.0CA-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA7.0CA-E3/73 is usually 5 days.
3.What payment methods are accepted for SA7.0CA-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.0CA-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA7.0CA-E3/73?
SA7.0CA-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA7.0CA-E3/73 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SA7.0CA-E3/73?
For technical support, including SA7.0CA-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.0CA-E3/73 requirements.
6.How does Aetrix verify that SA7.0CA-E3/73 is sourced from the original manufacturer or authorized distributors?
All SA7.0CA-E3/73 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SA7.0CA-E3/73 meets industry standards.
7.What is the process for return or replacement of SA7.0CA-E3/73?
All SA7.0CA-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.0CA-E3/73, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SA7.0CA-E3/73 part is unused and in its original packaging.
Return procedure for SA7.0CA-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA7.0CA-E3/73 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
